The cause of the Livonia fire condominium that displaced seven families Friday afternoon is still under investigation, but officials don't believe it was intentionally set.

"We suspect no foul play at this time," Fire Inspector Keith Bo said Monday.

No one was injured in the blaze at the On the Pond condominium complex in the area of Eight Mile and Gill, but it damaged eight of the 16 units in the building where the fire started. Four of the units were severely damaged. No one was living in one of the damaged units.

It was the worst fire for the city of Livonia this winter, Bo said.

Livonia firefighters responded to a call around 2:45 p.m. from a resident of the condo complex, who said his unit was being filled with smoke. When firefighters arrived, they found a second-floor unit in one of the complex's eight buildings on fire.

Livonia Fire Chief Shadd Whitehead said the fire eventually collapsed into the unit below it. The elderly resident of the lower unit had been safely removed from the complex prior to the collapse.

Salvation Army and American Red Cross assistance was being provided to the displaced families.

Firefighters brought the fire under control shortly before 5 p.m., Whitehead said. All five Livonia stations were involved, including units that had been out on rescue incidents at the time the call came in. Whitehead said firefighters from both Farmington Hills and Northville Township helped fight the fire.

"Our guys were pretty taxed," Whitehead said of his firefighters. "But we got it under control."

Bo said firefighters did a great job restricting the worst damage to the four units since the fire got into the vacant space between the floors. He said they spent the next couple of hours chasing hot spots after getting the main fire under control.

"Our crews did a great job keeping the damage to a minimum," Bo said.

He said the fact the floor collapsed is hindering efforts to determine how and where the fire started. "It's not safe to get to some of the places we needed to get," Bo said.

Mayor Jack Kirksey praised the efforts of Livonia's firefighters. "I'm proud of the manner in which our firefighters handled what was a very significant fire," Kirksey said.